Zendaya's afraid of flying boogers!

Zendaya's Shake It Up costar Roshon Fegan gave her an LOL-worthy tip when she joined Dancing with the Stars! "He told me the best piece of advice was to blow my nose before I go onstage," she laughs. "I was like, 'OK, what does that have to do with anything?' He said, 'It's live. There are HD cameras. Snot will fly!"